The RT9913A/B includes a high-performance boost
regulator, one linear-regulator controller for VGL, one low
dropout linear regulator, a gate pulse modulator (GPM), a
voltage detector and a VCOM Buffer (Unity- gain OPA) for
active-matrix thin-film transistor (TFT) liquid-crystal displays
(LCDs).
The boost converter provides the regulated supply voltage
for the panel source driver ICs. With integrated 16V
N-Channel 0.2Ω MOSFET it allows the use of ultra-small
inductors and ceramic capacitors and provides fast transient
response to pulsed loads. The VGL linear-regulator
controller provides regulated TFT Gate-Off . The low-dropout
linear regulator (LDO) using an internal PMOS as the pass
device can supply up to 350mA current is suitable for the
supply voltage to the T-CON ASIC. And the GPM is
controlled by frame signals from timing controller to
modulate the Gate-On voltage. Voltage detector monitors
the supply voltage to issue a reset signal while the
detected voltage is too low. The VCOM Buffer (Unity-gain)
high-performance operation amplifier) can drive the LCD
backplane (VCOM) and features high short-circuit current
(140mA), fast slew rate (12V/μs), wide bandwidth (12MHz)
and rail-to-rail input and output.资料下载
